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Accurate position sensing is important for state estimation and control in robotics. Reliable and accurate position sensors are usually expensive and difficult to customize. Incorporating them into systems that have very tight volume…

Robotics · Computer Science 2022-01-12 Chao Liu , Tarik Tosun , Mark Yim

Solenoid-free tokamak startup techniques are essential for spherical tokamaks and offer a pathway to cost reduction and design simplification in fusion energy systems. Local helicity injection (LHI) is one such approach, employing compact…

Plasma Physics · Physics 2025-11-07 C. E. Schaefer , A. C. Sontag , N. M. Ferraro , J. D. Weberski , S. J. Diem

3D Swin Transformer (3D-ST) known for its hierarchical attention and window-based processing, excels in capturing intricate spatial relationships within images. Spatial-spectral Transformer (SST), meanwhile, specializes in modeling…

Computer Vision and Pattern Recognition · Computer Science 2024-09-27 Muhammad Ahmad , Manuel Mazzara , Salvatore Distifano

With the rapid development of autonomous driving, LiDAR-based 3D Human Pose Estimation (3D HPE) is becoming a research focus. However, due to the noise and sparsity of LiDAR-captured point clouds, robust human pose estimation remains…

Computer Vision and Pattern Recognition · Computer Science 2024-12-19 Xiaoqi An , Lin Zhao , Chen Gong , Jun Li , Jian Yang

The Transformer has been successfully used in medical image segmentation due to its excellent long-range modeling capabilities. However, patch segmentation is necessary when building a Transformer class model. This process may disrupt the…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Xiaofei Huang , Hongfang Gong , Jin Zhang

Reliable modeling and control of core density is essential for reactor-relevant magnetic confinement fusion operation, motivating cryogenic pellet injection as a primary fueling actuator and the need for predictive pellet source models in…

This paper deals with the numerical reconstruction of the plasma current density in a Tokamak and of its equilibrium. The problem consists in the identification of a non-linear source in the 2D Grad-Shafranov equation, which governs the…

Numerical Analysis · Mathematics 2009-11-26 Jacques Blum , Cédric Boulbe , Blaise Faugeras

The development of advanced packaging is essential in the semiconductor manufacturing industry. However, non-destructive testing (NDT) of advanced packaging becomes increasingly challenging due to the depth and complexity of the layers…

Instrumentation and Detectors · Physics 2025-07-17 J. Senthilnath , Jayasanker Jayabalan , Zhuoyi Lin , Aye Phyu Phyu Aung , Chen Hao , Kaixin Xu , Yeow Kheng Lim , F. C. Wellstood

Plasma-based optics have emerged as a powerful platform for manipulating and amplifying ultra-intense laser pulses. However, the inherently nonlinear and dynamic nature of plasma leads to significant spatial, spectral, and temporal…

Plasma Physics · Physics 2025-12-30 Sk Rakeeb , Animesh Sharma , Sagar Dam , Ameya Parab , Amit Lad , Yash. M. Ved , Amita Das , G. Ravindra Kumar

Plastic scintillation detectors are increasingly used to measure dose distributions in the context of radiotherapy treatments. Their water-equivalence, real-time response and high spatial resolution distinguish them from traditional…

Medical Physics · Physics 2021-09-22 Emily Cloutier , Louis Archambault , Luc Beaulieu

Dynamic magnetic resonance imaging (DMRI) is an effective imaging tool for diagnosis tasks that require motion tracking of a certain anatomy. To speed up DMRI acquisition, k-space measurements are commonly undersampled along spatial or…

Image and Video Processing · Electrical Eng. & Systems 2023-09-20 Di Xu , Hengjie Liu , Dan Ruan , Ke Sheng

The ball pen probe (BPP) technique is used successfully to make profile measurements of plasma potential, electron temperature and radial electric field on the Mega Amp Spherical Tokamak (MAST). The potential profile measured by the BPP is…

Plasma Physics · Physics 2019-08-14 N. R. Walkden , J. Adamek , S. Allan , B. D. Dudson , S. Elmore , G. Fishpool , J. Harrison , A. Kirk , M. Komm

Multiple instance learning (MIL) has emerged as a popular method for classifying histopathology whole slide images (WSIs). Existing approaches typically rely on frozen pre-trained models to extract instance features, neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-20 Yi Lin , Zhengjie Zhu , Kwang-Ting Cheng , Hao Chen

We study the shape reconstruction of an inclusion from the {faraway} measurement of the associated electric field. This is an inverse problem of practical importance in biomedical imaging and is known to be notoriously ill-posed. By…

Numerical Analysis · Mathematics 2022-01-25 Ming-Hui Ding , Hongyu Liu , Guang-Hui Zheng

In the context of control of smart structures, we present an approach for state estimation of adaptive buildings with active load-bearing elements. For obtaining information on structural deformation, a system composed of a digital camera…

Signal Processing · Electrical Eng. & Systems 2020-08-20 Alexander Warsewa , Michael Böhm , Flavio Guerra , Julia Wagner , Tobias Haist , Cristina Tarín , Oliver Sawodny

Existing image inpainting methods leverage convolution-based downsampling approaches to reduce spatial dimensions. This may result in information loss from corrupted images where the available information is inherently sparse, especially…

Computer Vision and Pattern Recognition · Computer Science 2024-02-23 Shuang Chen , Amir Atapour-Abarghouei , Hubert P. H. Shum

In strictly axisymmetric configurations of tokamaks, field-line tracing reduces from a three-dimensional ODE system to a two-dimensional one, where Poincar\'e-Bendixson theorem applies and guarantees the nonexistence of chaos. The formulae…

Plasma Physics · Physics 2025-03-11 Wenyin Wei , Liang Liao , Alexander Knieps , Jiankun Hua , Yunfeng Liang , Shaocheng Liu

The Tokamak device is the most promising candidate for producing sustainable electric power by nuclear fusion. It is a torus-shaped device that confines plasma by a strong magnetic field. The development, design and control of the design…

Plasma Physics · Physics 2022-11-17 M. Holst , V. Kungurtsev , S. Mukherjee

AWAKE, the Advanced Proton-Driven Plasma Wakefield Acceleration Experiment, is a proof-of-principle R&D experiment at CERN using a 400 GeV/c proton beam from the CERN SPS (longitudinal beam size sigma_z = 12 cm) which will be sent into a 10…

Plasma Physics · Physics 2016-08-03 M. Turner , A. Petrenko , B. Biskup , S. Burger , E. Gschwendtner , K. V. Lotov , S. Mazzoni , H. Vincke

Instance segmentation performance in remote sensing images (RSIs) is significantly affected by two issues: how to extract accurate boundaries of objects from remote imaging through the dynamic atmosphere, and how to integrate the mutual…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Dawen Yu , Shunping Ji